Interesting story in Anthony Beevor’s “World War II”. An ethnic Korean soldier in the Chinese Army or local Manchurian militia is captured by the Japanese in their conquest of Manchuria in 1931. The guy is then dragooned into the local puppet government’s, Manchukuo, forces and then captured by the Soviets in a border skirmish. The Soviets let him out of the POW camp when he enlists in the Red Army. He is captured by the Germans in the winter of 41-42 outside of Moscow. The Germans draft him into their own forces, and the Korean guy ends up on the beaches of Normandy where he ends the war as a prisoner of the US Army.
Yang Kyoungjong
The excellent Korean movie “My Way” (2011) is based on this story. I think it’s still on Netflix.